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L'étude caryologique de deux cultivars de Violettes odorantes remet en cause leur origine taxonomique

2003; Taylor & Francis; Volume: 150; Issue: 1 Linguagem: Inglês

10.1080/12538078.2003.10515988

2166-3408

Betty Chauchard, Jérôme Munzinger, Thomas Mareussen, Max Henry,

Mediterranean and Iberian flora and fauna

Abstract The determination of the karyotypes of two cultivars of sweet-smelling Violets, well-known and commercially widely used presently and in the past, the Violet of Toulouse, Viola ‘Parme de Toulouse’, and V. Tourrettes sur Loup' or V. ‘Reine Victoria’, brings new elements on their taxonomic relationships with European wild Violets taxa. The finding of 2n = 20 chromosomes in Viola ‘Parme de Toulouse’ rules out identity with the wild species V. suavis, suggested by Timbal-Lagrave in the XIXth century and currently admitted until now. This karyotype would connect this cultivar with one of the two other sweet-smelling wild species, V. odorata and V. alba or one of their hybrids. Conversely, the finding of 2n = 40 chromosomes in Viola Tourrettes sur Loup' eliminates any relationship with 21/odorata, as was recently published. Rather, a close relation to V. suavis, the only species with 2n = 40 in this group, is suggested.